9 Zucchini Gratin Recipes

A creamy mixture of zucchini, Monterey Jack cheese, and pepper jack cheese is topped with a seasoned bread crumb topping. "This is a great side dish and can easily be used as a main dish for a light summer dinner," says recipe creator glitzg. 

Cheddar cheese, onion, and zucchini are layered and topped with a buttery bread crumb topping. Reviewer Elizabeth Abbott brought this dish to a potluck barbeque: "It was devoured and I have sent this recipe on to multiple people from the BBQ."

Zucchini is second to none when it comes to fresh summer produce, except for maybe fresh summer tomatoes. This gratin includes both, in addition to Cheddar cheese, Parmesan cheese, onion, bread crumbs, garlic, and spices. 

Gruyere cheese and panko bread crumbs put an upscale spin on this side dish. This is a great way to use up your summer bumper crop because it also features yellow squash. 

Boxed biscuit baking mix (such as Bisquick®) and crushed saltine crackers are the secret ingredients in this squash casserole. 

Buttery cracker crumbs and Mexican cheese blend make the irresistible topping for this gratin. If you prefer the zucchini more al dente, reviewer daphneryan suggests cutting down on the saute time before the zucchini goes into the baking pan. 

Recipe creator edyegourmet describes this recipe as, "A nice departure from casserole recipes that call for cream soups or cheese." Horseradish is added to this casserole for a spicy kick. 

This gratin could easily be served as the main dish, thanks to the addition of ham. Honey and goat cheese add sophisticated flavor. 

Shortcut ingredients like boxed stuffing mix and cream of chicken soup make this an easy casserole that comes together in just over an hour. Reviewer Michelle Williamson suggests adding mushrooms as well.